Wave Filters Including Long Line Elements Patents (Class 333/202)
  • Patent number: 10396420
    Abstract: A ceramic resonator radio frequency filter includes a printed circuit board, one or more first coaxial resonators disposed on the printed circuit board, and one or more second coaxial resonators disposed over the one or more first coaxial resonators so that the one or more first coaxial resonators and one or more second coaxial resonators are arranged in a stacked configuration. The one or more first coaxial resonators and second coaxial resonators electrically connected to the printed circuit board.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: August 27, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: John Kenneth Darling, Brian Christopher Eiker, Robert Allen Burk, Michael R. Frye
  • Patent number: 10381700
    Abstract: A dielectric filter includes: a resonator body formed of dielectric material; surrounding dielectric portion present around the resonator body and formed of dielectric material having a relative permittivity lower than the dielectric material used to form the resonator body; and an input/output conductor portion formed of a conductor and configured to perform at least one supply of an electromagnetic wave to the resonator body and reception of an electromagnetic wave from the resonator body. The resonator body has a first end face and a second end face located at opposite ends in a first direction. The input/output conductor portion is located either at least part of the input/output conductor portion is contained in a space formed by shifting a virtual plane corresponding to the first end face in the first direction away from the second end face, or the input/output conductor portion is in contact with the space.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: August 13, 2019
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Kazunari Kimura, Shigemitsu Tomaki
  • Patent number: 10381701
    Abstract: A first switch is configured to open and close connection between an end part of a first transmission line and ground, and a second switch is configured to open and close connection between an end part of a third transmission line and ground.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: August 13, 2019
    Assignee: NEC CORPORATION
    Inventor: Keiichi Motoi
  • Patent number: 10366194
    Abstract: A method of designing a microwave filter using a computerized filter optimizer, comprises generating a filter circuit design in process (DIP) comprising a plurality of circuit elements having a plurality of resonant elements and one or more non-resonant elements, optimizing the DIP by inputting the DIP into the computerized filter optimizer, determining that one of the plurality of circuit elements in the DIP is insignificant, removing the one insignificant circuit element from the DIP, deriving a final filter circuit design from the DIP, and manufacturing the microwave filter based on the final filter circuit design.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: July 30, 2019
    Assignee: Resonant Inc.
    Inventors: Neal Fenzi, Kurt Raihn
  • Patent number: 10367970
    Abstract: An image forming apparatus includes a communication interface capable of communication over a plurality of frequency bands and a controller configured to determine whether the content of communication of the communication interface satisfies a predetermined condition. The controller is configured to execute control for switching the frequency band of communication via the communication interface to another frequency band over the frequency bands when the content of communication of the communication interface satisfies a predetermined condition.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: July 30, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Akihiro Torigoshi, Junichi Hase, Takeshi Minami, Tomoaki Nakajima, Nobuhiro Mishima, Yuji Tanaka, Daisuke Nakano
  • Patent number: 10356509
    Abstract: A signal processing method of an audio sensing device is provided. The audio sensing device includes a plurality of resonators, at least some of the plurality of resonators having different frequency bands. The method includes setting a plurality of time frames corresponding to the plurality of resonators, and calculating a sound feature for each of the plurality of time frames, the sound feature being calculated based on an audio signal detected by each of the plurality of the resonators, wherein the plurality of time frames are set independently for each of the frequency bands, and at least some of the plurality of time frames are set to have different time intervals.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: July 16, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sangha Park, Sungchan Kang, Cheheung Kim, Yongseop Yoon, Choongho Rhee, Hyeokki Hong
  • Patent number: 10333222
    Abstract: Provided is a method of improving a bandwidth of an antenna using a transmission line stub to enable long-range communication together with broadband matching. According to the method, it is possible to combine a transmission line stub in series or parallel with a feeding point, which is an antenna signal input/output point of a body serving as an antenna, and apply the transmission line stub to an antenna for wide use.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: June 25, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun Hee Kim, Ju Derk Park, In Hwan Lee, Ho Yong Kang, Jae Heum Lee
  • Patent number: 10315523
    Abstract: A conductor arrangement structure for a wireless power supply system which is equipped with a ground-side device (3) that is installed on a ground side and has a power-feeding coil (L1) and a vehicle-side device (2) that is installed on a vehicle (1) and has a power-receiving coil (L2) and in which electric power is supplied from the ground-side device (3) to the vehicle-side device (2) without contact, wherein grounding wires (23) are arranged between the power-feeding coil (L1) and the power-receiving coil (L2) so as to extend over a high-potential portion and a low-potential portion of an electric field that is generated when the power-feeding coil (L1) is excited.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 11, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takuya Kinoshita, Yukinori Tsukamoto
  • Patent number: 10320043
    Abstract: A miniaturized power distributing device with harmonic suppression function and low cost is set in a substrate, and includes first, second, and third metal levels. The first metal level includes a power divider to divide one signal into multiple output signals, or to combine multiple input signals into one output signal. The second metal level includes a filter structure to filter out harmonics. The third metal level is isolated against electromagnetic wave signal leaking from the second metal level. The second metal level is set between the first and third metal levels, dielectric layers are set between the first and second metal levels and between the second and third metal levels.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 11, 2019
    Assignee: NANNING FUGUI PRECISION INDUSTRIAL CO., LTD.
    Inventor: Yu-Chih Chueh
  • Patent number: 10320044
    Abstract: The present application provides a dielectric resonator, a dielectric filter, a base station and a method for fabricating the dielectric resonator or the dielectric filter. The dielectric resonator includes: a solid dielectric resonator body, a blind hole located on one side of the solid dielectric resonator body, a metalized layer covering both a surface of the solid dielectric resonator body and a surface of the blind hole, and a demetallized notch located at the metalized layer on the surface of the blind hole. The dielectric resonator provided in the present application can implement tuning of the dielectric resonator, and reduce impact on the resonance frequency of the dielectric resonator after the dielectric resonator is tuned, where the impact caused by that the demetallized notch is covered by a metal material in an assembly process of the dielectric resonator, and signal energy that is leaked from the notch is reduced.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: June 11, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bengui Yuan, Qiang Wang
  • Patent number: 10320050
    Abstract: A multi-mode resonator includes: a housing having a cavity therein; and a plurality of resonance ribs which are arranged radially around a center of the cavity with a predetermined interval therebetween. Each of the plurality of resonance ribs includes a body having a lower end and an upper end. The lower end of each of the plurality of resonance ribs is fixed to a bottom surface of the housing, and the body of the each of the plurality of resonance ribs is bent so that the upper end of each of the plurality of resonance ribs points to the center of the cavity.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: June 11, 2019
    Assignee: KMW INC.
    Inventor: Nam-Shin Park
  • Patent number: 10320048
    Abstract: A communication device includes a circuit board having an upper surface and a lower surface, an upper housing disposed on the upper surface, and a lower housing disposed on the lower surface. The circuit board includes a top metal frame disposed on the upper surface, wherein the top metal frame defines a top cavity; a bottom metal frame disposed on the bottom surface, wherein the bottom metal frame defines a bottom cavity corresponding to the top cavity; a microstrip line disposed on the upper surface and extending into the top cavity; and a side coupler disposed on the lower surface and extending into the bottom cavity. The upper housing includes a depression corresponding to the top cavity, and the lower housing includes an aperture corresponding to the bottom cavity.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 11, 2019
    Assignee: MICROELECTRONICS TECHNOLOGY, INC.
    Inventor: Ping-Chin Tseng
  • Patent number: 10298195
    Abstract: The present invention relates to a radio frequency filter employing a notch structure, wherein the notch structure is a dual notch structure which comprises: a C notch structure formed in a predetermined region at a partition between two cavities to be cross-coupled; and an L notch structure formed together with the C notch structure in a predetermined region at a partition between two cavities.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: May 21, 2019
    Assignee: KMW INC.
    Inventor: Nam-Shin Park
  • Patent number: 10270480
    Abstract: Systems and methods are provided for implementing bandstop filters (e.g., RF/microwave bandstop filters) that can automatically tune to a frequency of an interfering signal. Embodiments of the present disclosure provide automatically tunable signal-tracking bandstop filters with a significant reduction in response time, complexity, size, weight, and cost when compared to conventional devices.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: April 23, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Andrew C. Guyette, Eric J. Naglich
  • Patent number: 10256389
    Abstract: A new method, system and apparatus for mounting mechanically, thermally and electrically light emitting diode (LED), crystals, arrays or packages. The above provides an LED assembly having reduced number of components and costs, superior heat dissipation, mechanical properties and a compact structure. The use of a grid or mesh allows for more efficient and inexpensive removal of heat from one or more LEDs within an LED fixture.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: April 9, 2019
    Inventors: Andrey Zykin, Alcinda Miller, Stephen Miller
  • Patent number: 10244618
    Abstract: Disclosed herein are printed circuit boards (PCBs) with patterned ground structure filters and data storage devices comprising such PCBs. Each PCB comprises a resonator having an L-shape or a zig-zag shape in a plane of the printed circuit board and at least one signal trace. The resonator has a first dimension and a second dimension in the plane of the printed circuit board. A portion of the at least one signal trace is situated over the resonator and is separated by a distance from the resonator by a dielectric material. In some embodiments, at least part of the portion of the at least one signal trace extends in a same direction as the first dimension (in the case of an L-shaped resonator) or tracks the zig-zag shape of the resonator (in the case of a zig-zag-shaped resonator).
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: March 26, 2019
    Assignee: Western Digital Technologies, Inc.
    Inventors: Albert Wallash, John Contreras, Satoshi Nakamura, Hui He
  • Patent number: 10236550
    Abstract: An in-line resonator filter has a linear array of three or more conductors. A first pair of adjacent conductors has inductive main coupling and oppositely signed capacitive main coupling, while a second pair of non-adjacent conductors has inductive cross-coupling. The first and second pairs have one conductor in common. Between the second pair of non-adjacent conductors, there is no direct ohmic connection that provides the corresponding inductive cross-coupling. The oppositely signed capacitive main coupling compensates for at least a portion of the inductive main coupling between the first pair of adjacent conductors. The in-line resonator filter is able to provide one or more transmission zeros without requiring any discrete bypass connectors that provide direct ohmic connection between pairs of non-adjacent conductors. As such, the in-line resonator filters can be smaller, less complex, and less susceptible to damage.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: March 19, 2019
    Assignee: CommScope Italy S.r.l.
    Inventors: Stefano Tamiazzo, Giuseppe Resnati
  • Patent number: 10230144
    Abstract: A profile-reduced or size-reduced filter is to be provided. The filter includes: a metallic casing, an opening provided in the metallic casing, a metallic cover configured to cover the opening, and a TM mode dielectric resonator disposed in the opening and configured to electrically contact a bottom surface of the metallic casing, and the metallic cover. The TM mode dielectric resonator has a height lower than a lowest possible height at which a ¼ wavelength semi-coaxial resonator is disposed in the opening.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: March 12, 2019
    Assignee: NEC Corporation
    Inventor: Manabu Yoshida
  • Patent number: 10224723
    Abstract: Described is a wireless power system. The wireless power system can include a wireless charging coil, a driving circuit connected to the wireless charging coil, and a filter element coupled to the wireless charging coil. The driving circuit can be configured to drive the wireless charging coil at a power transmission frequency. The filter element can be configured to filter one or more interference signal components from the wireless power system.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: March 5, 2019
    Assignee: Intel Corporation
    Inventor: Esa Ilmari Saunamäki
  • Patent number: 10218330
    Abstract: Provided is a laminated chip device including a first laminate in which a plurality of conductor patterns formed on a plurality of sheets are connected to each other through a via formed to penetrate at least a sheet, and a second laminate provided over or below the first laminate and having a plurality of internal electrode patterns formed on a plurality of sheets, and the internal electrode patterns have a non-conductive region in at least a portion of an area corresponding to the via.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: February 26, 2019
    Assignee: INNOCHIPS TECHNOLOGY CO., LTD.
    Inventors: In Kil Park, Tae Hyung Noh, Gyeong Tae Kim, Myung Ho Lee, Tae Geun Seo, Min Soo Lee, Song Yeon Lee
  • Patent number: 10211500
    Abstract: Disclosed is a tunable low-pass filter using a dual mode including a cylindrical cavity configured to trigger a resonant mode, a plurality of irises formed on a lateral face of the cylindrical cavity, and a dummy iris formed on the lateral face of the cylindrical cavity, wherein the resonant mode includes a plurality of modes having a plurality of resonant frequencies, and differences in resonance frequency between the plurality of modes are determined based on angles between the plurality of irises based on an axis of the cylindrical cavity.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: February 19, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Changsoo Kwak
  • Patent number: 10205210
    Abstract: A cavity filter having a ceramic resonator is disclosed. The disclosed cavity filter may include: a housing in which at least one cavity is formed and which has a ceramic resonator held in the cavity; a ceramic ring joined to an upper part of the ceramic resonator; and a cover joined to one side of the housing, where a through-hole is formed in the ceramic resonator to form a penetration from one side to the other side along one direction, and a metal layer is formed on a surface on the one side of the ceramic resonator, on a surface on the other side of the ceramic resonator, and on the inner perimeter of the through-hole. The disclosed cavity filter can provide the advantage that it can be manufactured as a compact structure.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: February 12, 2019
    Assignee: ACE TECHNOLOGIES CORPORATION
    Inventors: Jae Kwang Yoon, Dong-Wan Chun
  • Patent number: 10193205
    Abstract: Embodiments of the present disclosure provide a dielectric resonator, a dielectric filter using the dielectric resonator, a transceiver, and a base station, and solve a problem that a loss indicator of an existing dielectric filter cannot meet a filtering requirement of a base station. The dielectric resonator includes a body made of a solid-state dielectric material, where an indentation is disposed on a surface of the body, and the surface of the body and a surface of the indentation are covered with a conducting layer; the dielectric filter includes at least two of the foregoing dielectric resonators. Another type of dielectric filter includes a body made of a solid-state dielectric material, where at least two indentations are disposed on a surface of the body, a hole and/or a groove is disposed between adjacent indentations on the body, and the surface of the body is covered with a conducting layer.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: January 29, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bengui Yuan, Qiang Wang
  • Patent number: 10186745
    Abstract: A millimeter wave filter fine-tuning structure includes a resonant cavity, a fine-tuning cavity disposed at the edge of the resonant cavity, a fine-tuning cavity coupled to the resonant cavity, and plural adjusting screws disposed and inserted in the fine-tuning cavity, and the distance between the adjusting screws and the resonant cavity may be used to adjust the resonant frequency of the filter.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: January 22, 2019
    Inventors: Jung-Chin Hsu, Sheng-Ho Chang, Sheng-Feng Yeh, Chun-Kai Wang, Wun-Kai Wu, Chun-Yu Chu, Chun-Wei Chen
  • Patent number: 10181626
    Abstract: A filter including a resonator formed of metal and including a first through hole in one direction, and a transmission line penetrating through the first through hole, wherein the transmission line is spaced apart from the first through hole.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: January 15, 2019
    Assignee: INNERTRON, INC.
    Inventors: Hyo Chul Kim, Tae Jin Jeong
  • Patent number: 10181632
    Abstract: Disclosed are single-piece magnetically tunable ferrite rods that can be used for radio-frequency (RF) applications, and methods of manufacturing the resonators using synthetic garnets. In some embodiments, a separate tuner need not be used in the resonator during magnetic tuning. Examples of fabrication methods and RF-related properties are also disclosed.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: January 15, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: David Bowie Cruickshank, John Christopher Deriso, Michael David Hill
  • Patent number: 10181837
    Abstract: The present application is directed to a tunable filter system. The system includes a resonator having an inner wall surrounding a cavity. The resonator includes a MEMS device positioned in the cavity including a substrate, a movable plate and a thermal actuator. The thermal actuator is has a first end coupled to the substrate and a second end coupled to the plate. The actuator moves the plate between a first and a second position in relation to the substrate. The application is also directed to a method for operating the tunable filter.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: January 15, 2019
    Assignee: LGS Innovations LLC
    Inventors: Michael Jarret Holyoak, George Kenneth Kannell, Marc Jay Beacken, David J. Bishop, Jackson Chang, Matthias Imboden
  • Patent number: 10164309
    Abstract: The present application provides a dielectric filter, including a body part, a dielectric resonator, a cavity is formed in the body part, and a support kit is disposed at a bottom of the cavity. The dielectric resonator, including a dielectric body and at least two adjusting holes disposed on the dielectric body, is contained in the cavity and is disposed on the support kit. The dielectric body has a first mirror plane and a second mirror plane, which are perpendicular to each other and penetrate through the top plane and the bottom plane of the dielectric body, and any two of the at least two adjusting holes are not mirror symmetric relative to the first mirror plane or the second mirror plane.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: December 25, 2018
    Assignee: Huawei Technologies Co., Ltd
    Inventors: Guosheng Pu, Yanlin Song, Zhen Shen, Jing Shi
  • Patent number: 10153532
    Abstract: A filter structure improvement includes a substrate, resonance layers, a grounded layer, a pattern layer, an input electrode, and an output electrode. The substrate has resonance holes in which the resonance layers are disposed. One end of the resonance hole is on the open surface and the other end of the resonance hole is on the short-circuit surface. The grounded layer is on the short-circuit surface, top surface, bottom surface, and side surfaces and is electrically connected to the resonance layers to form a short-circuit end. The input and output electrodes, electrically isolated from the grounded layer, are on the bottom or open surface of the substrate. The pattern layer, resonance layers, and grounded layer are arranged to have electrical properties of a filter structure of mutual coupling such that a desired frequency band is obtained by adjusting the pattern layer and the lengths of the resonance layers.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: December 11, 2018
    Assignee: CIROCOMM TECHNOLOGY CORP.
    Inventors: Shin-Hui Chou, Chin-Hao Chen, Yue-Cheng Jhong, Yi-Ching Lin
  • Patent number: 10153531
    Abstract: A radio frequency filters and methods for implementing the filters in multilayer metallic-dielectric structures, such as printed circuit boards (PCB), low temperature co-fired ceramic (LTCC) components and integrated circuits (IC). The methods and filters utilize vertical stacking of transmission lines and related frequency-selective structures to obtain compact implementation of filters of high order. The methods and filters are applicable to a variety of filter types and related structures such as multiplexers.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: December 11, 2018
    Assignee: VAYYAR IMAGING LTD.
    Inventor: Naftali Chayat
  • Patent number: 10116280
    Abstract: A coil component includes a magnetic body having a plurality of filter parts disposed on a substrate and spaced apart from each other in a thickness direction. A plurality of input terminals and output terminals are disposed on outer surfaces of the magnetic body. Each of the filter parts includes upper and lower coils disposed in the magnetic body and spaced apart from each other in the thickness direction. In one example, a number of turns of the upper and lower coils of one filter part is different from a number of turns of the upper and lower coils of another filter part adjacent thereto. In another example, the number of turns of the upper and lower coils of the one and the other filter parts are the same, but capacitances of the one and the other filter parts are different.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: October 30, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Won Chul Sim, Dong Hwan Lee, Young Ghyu Ahn
  • Patent number: 10111317
    Abstract: A printed circuit board includes a printed wiring board and a transmission circuit implemented on the printed wiring board and transmitting digital signals. The printed wiring board connected to the transmission circuit includes a main wiring pattern transmitting digital signals and a first wiring pattern having a connection end connected to the main wiring pattern and an open end. The printed wiring board further includes a second wiring pattern having a grounded end and an open end and extending in a direction in which the first wiring pattern extends. The second wiring pattern is disposed such that the grounded end of the second wiring pattern is disposed adjacent to the connection end or the open end of the first wiring pattern. By this, a printed circuit board capable of suppressing EMI is provided while increase in size of the printed wiring board is avoided.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: October 23, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiro Takahashi
  • Patent number: 10109905
    Abstract: The present invention relates to a multi-mode resonator comprising: a housing in which a cavity corresponding to a substantially single accommodating space is arranged; and multiple resonance ribs which are arranged at a predetermined interval therebetween in the cavity, have lower ends fixed to a floor surface of the housing, have upper ends facing each other, and generate a resonance signal by multiple coupling therebetween.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: October 23, 2018
    Assignee: KMW INC.
    Inventor: Nam-Shin Park
  • Patent number: 10109906
    Abstract: The present invention relates to a multimode resonator comprising: a housing provided with a cavity substantially corresponding to one accommodation space; a plurality of resonance arms arranged at preset intervals from each other in the cavity and generating resonance signals by complex mutual coupling; and a plurality of resonance legs for respectively supporting the plurality of resonance arms.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: October 23, 2018
    Assignee: KMW INC.
    Inventor: Nam-Shin Park
  • Patent number: 10084224
    Abstract: An electromagnetic coupler includes a dielectric layer with a first transmission line connecting an input port to an output port. A second transmission line on another surface of the dielectric layer forms a coupled port and an isolation port. The electromagnetic coupler provides a coupled signal at the coupled port, which is representative of an input signal at the input port. The amplitude of the coupled signal is related to the amplitude of the input signal by a coupling factor. A tuning element on the dielectric layer is configured to stabilize the coupling factor over a range of variations in thickness of the dielectric layer.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: September 25, 2018
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Nuttapong Srirattana, Sriram Srinivasan, Zhiyang Liu
  • Patent number: 10056662
    Abstract: Systems and methods are provided for implementing a switched microwave bandstop filter with minimum insertion loss and phase distortion in the bypass state. For example, embodiments of the present disclosure provide systems and methods for implementing self-switching bandstop filters that do not require signal-routing RF switches, allowing for very low passband insertion loss and improved power handling.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: August 21, 2018
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Andrew C. Guyette, Eric J. Naglich, Sanghoon Shin
  • Patent number: 10056670
    Abstract: A method has been described for making an electrical structure having an air dielectric and includes forming a first subunit including a sacrificial substrate, an electrically conductive layer including a first metal on the sacrificial substrate, and a sacrificial dielectric layer on the sacrificial substrate and the electrically conductive layer. The method further includes forming a second subunit including a dielectric layer and an electrically conductive layer thereon including the first metal, and coating a second metal onto the first metal of one or more of the first and second subunits. The method also includes aligning the first and second subunits together, heating and pressing the aligned first and second subunits to form an intermetallic compound of the first and second metals bonding adjacent metal portions together, and removing the sacrificial substrate and sacrificial dielectric layer to thereby form the electrical structure having the air dielectric.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: August 21, 2018
    Assignee: HARRIS CORPORATION
    Inventors: Michael Raymond Weatherspoon, Louis Joseph Rendek, Jr., Lawrence Wayne Shacklette, Robert Patrick Maloney, David M. Smith
  • Patent number: 10050597
    Abstract: A time delay filter comprising a substrate; four coupled LC resonators, each having a coupling point; a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; the filter group delaying a signal output at the fourth coupling point relative to a signal input at the first coupling point.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: August 14, 2018
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Patent number: 10027310
    Abstract: A method of constructing an RF filter comprises designing an RF filter that includes a plurality of resonant elements disposed, a plurality of non-resonant elements coupling the resonant elements together to form a stop band having a plurality of transmission zeroes corresponding to respective frequencies of the resonant elements, and a sub-band between the transmission zeroes. The non-resonant elements comprise a variable non-resonant element for selectively introducing a reflection zero within the stop band to create a pass band in the sub-band. The method further comprises changing the order in which the resonant elements are disposed along the signal transmission path to create a plurality of filter solutions, computing a performance parameter for each of the filter solutions, comparing the performance parameters to each other, selecting one of the filter solutions based on the comparison of the computed performance parameters, and constructing the RF filter using the selected filter solution.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: July 17, 2018
    Assignee: RESONANT INC.
    Inventors: Genichi Tsuzuki, Balam A. Willemsen
  • Patent number: 9991577
    Abstract: A cavity filter that uses cross-coupling is disclosed, which includes: a housing, in which multiple cavities are formed, with the cavities being open towards a first direction; multiple resonators held respectively in the multiple cavities; and a coupling member arranged to pass through an aperture between a first cavity and a second cavity, from among the multiple cavities, such that the coupling member is positioned between a first resonator and a second resonator. Here, the coupling member includes a first extending portion and a second extending portion, the first extending portion is positioned closer to the first resonator than to the second resonator and extends towards one side of the housing along the first direction, and the second extending portion is positioned closer to the second resonator than to the first resonator and extends towards the other side of the housing along the first direction.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: June 5, 2018
    Assignee: ACE TECHNOLOGIES CORPORATION
    Inventors: Dong-Wan Chun, Jae-Ok Seo
  • Patent number: 9977068
    Abstract: A device for combining two or more tones generated by a measuring instrument for output to a port includes a combiner point, a transmission path extending from the combiner point to the port, two or more signal source filters each adapted to be connected to a respective signal source of the measuring instrument and one or more receiver filters each adapted to be connected to a receiver of the measuring instrument. Each of the signal source filters and receiver filters includes a cavity, a resonator arranged within the cavity and connected with the combiner point at a distance of one quarter of a wavelength of a signal having a center frequency of the passband of the filter, and a solid dielectric filter connected with the cavity.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: May 22, 2018
    Assignee: ANRITSU COMPANY
    Inventor: Donald Bradley
  • Patent number: 9961375
    Abstract: A method of removing common mode noise in a vehicle includes: a radio frequency (RF) switch connecting a feeder cable ground to a common mode (CM) filter or a digital signal processor (DSP) according to a selection signal of an amplitude modulation (AM) broadcast or a frequency modulation (FM) broadcast selected by a user and the CM filter increasing impedance of the feeder cable ground to remove the common mode noise.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: May 1, 2018
    Assignee: Hyundai Motor Company
    Inventors: Kwang Woo Ryu, Jang Soon Han
  • Patent number: 9952557
    Abstract: A device for producing a subwavelength hologram. The device comprises a metasurface layer attached to a substrate. The metasurface layer includes an array of plasmonic antennas that simultaneously encode both wavelength and phase information of light directed through the array to produce a hologram. The wavelength is determined by the size of the antennas, and the phase is determined by the orientation of the antennas.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: April 24, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Amr Shaltout, Sajid Choudhury, Alexander V. Kildishev, Alexandra Boltasseva, Vladimir M. Shalaev
  • Patent number: 9948280
    Abstract: Disclosed is a two-capacitor-based filter design method comprising: determining a frequency f1 and a fractional bandwidth ratio FBW; selecting a first and a second capacitors according to f1 and FBW, in which a resonant frequency fC1 of the first capacitor is equal to f1×(1?N×FBW), a resonant frequency fC2 of the second capacitor is equal to f1×(1+M×FBW), and each of N and M is a positive number less than one; and determining a length of a first transmission line according to fC1 and a signal speed, and determining a length of a second transmission line according to fC2 and the signal speed. The first capacitor is coupled between a center of the first transmission line and ground, the second capacitor is coupled between a center of the second transmission line and ground, and the first and second transmission lines are connected in series.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: April 17, 2018
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Po-Chun Chen, Ruey-Beei Wu, Ting-Ying Wu, Wen-Shan Wang, Gerchih Chou
  • Patent number: 9939502
    Abstract: Disclosed herein are a RF resonator, a RF coil, and a magnetic resonance imaging (MRI) apparatus. The RF resonator includes a dielectric substance which is provided, on one surface thereof, with an electric conductor, and at least one conductor line which is installed on another surface of the dielectric substance so as to face the electric conductor and provided with a plurality of open-cut portions which are disposed in a plurality of rows.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: April 10, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., University of Ulsan Foundation for Industry Cooperation
    Inventors: Ju Hyung Lee, Hyoung Suk Yoo
  • Patent number: 9941564
    Abstract: A dielectric resonator includes: two dielectric resonant cylinders and a metal cavity, wherein the dielectric resonant cylinders are located within the metal cavity; and it also includes: a fastener and a connector, wherein bottoms of the dielectric resonant cylinders are connected via the connector to form a U-shaped structure, and the connector is fixed on the metal cavity via the fastener. With the dielectric resonator of the embodiments of the present invention, a good close contact between the dielectric resonant cylinders and the metal cavity can be guaranteed, thereby improving the resonant performance of the dielectric resonator.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: April 10, 2018
    Assignee: ZTE Corporation
    Inventors: Yulong Kang, Wanli Yu, Xiaowen Dai
  • Patent number: 9935348
    Abstract: A method for implementing a TM dielectric resonator is provided, which includes: a dielectric resonant column component with a metal connecting plate is machined; a metal cavity with an opening at one end is machined; the metal connection plate of the dielectric resonant column component is fastened to the inner wall of the metal cavity by a screw; the opening of the metal cavity is covered with a prefabricated cover plate; and a prefabricated tuning screw is screwed from the cover plate into the metal cavity.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: April 3, 2018
    Assignee: ZTE CORPORATION
    Inventors: Wanli Yu, Yulong Kang, Xiaowen Dai
  • Patent number: 9912026
    Abstract: A tunable filter element comprises a resonator unit that defines a longitudinal axis, the resonator unit includes an inner conducting portion defining an inner shorting end along the longitudinal axis and an inner capacitive end opposing the inner shorting end, an outer conducting portion arranged around the inner conductor defining an outer shorting end along the longitudinal axis and an outer capacitive end opposite to the outer shorting end. The inner and the outer conductors maintain an annular gap there-between, and are coupled to form a shorting end at one end and a capacitive end at the other. The filter element further comprises a ferrite insert disposed between the inner and the outer conducting portions and substantially filling the annular gap, the ferrite insert being configured to receive a bias magnetic field in a direction substantially parallel to the longitudinal axis.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: March 6, 2018
    Assignee: Microelectronics Technology Inc.
    Inventor: Öncel Acar
  • Patent number: 9887443
    Abstract: Provided is a channel filter for a communication apparatus. The channel filter includes a first resonator, a coupling element having a first longitudinal section and a second longitudinal section, and a first adjusting element. The coupling element is designed to couple the first resonator at least indirectly with an input or output of the channel filter. The first longitudinal section has a greater width than the second longitudinal section. The first adjusting element is disposed at least partially in the first longitudinal section and at least partially in the second longitudinal section.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: February 6, 2018
    Assignee: Tesat-Spacecom GmbH & Co. KG
    Inventors: Christian Arnold, Jean Parlebas
  • Patent number: 9876538
    Abstract: There is disclosed a mobile terminal including a housing comprising a first metal case, a second metal case and a first non-conductive case arranged between the first metal case and the second metal case, a battery embedded in the housing, a first coil arranged in an area covered by the first metal case inside the housing, a main board comprising a charging module implemented to recharge the battery using electric currents which flow in the first coil, and a first resonator arranged in an area covered by the first non-conductive case and comprising a first matching circuit corresponding to a first frequency, such that the examples of the mobile terminal in accordance with the present disclosure may enhance performance of the wireless communication unit and wireless charging performance, without design change of the housing having the metal case.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: January 23, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaehyun Choi, Hyengcheul Choi, Deuksu Choi, Dongjin Kim, Chisang You